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Analog Devices Inc./Maxim Integrated MAX4581ETE+
- Part No.:
- MAX4581ETE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX4581ETE+.pdf
- Description:
- IC MUX 8:1 80OHM 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:288
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Product details
Overview
MAX4581ETE+ from Maxim Integrated is an 8-channel CMOS analog multiplexer configured for rail-to-rail signal switching in low-voltage systems. It operates with ±2V to ±6V dual supplies or +2V to +12V single supply, delivers 80Ω on-resistance at ±5V, guarantees <1nA off-leakage at +25°C, and supports TTL/CMOS logic compatibility - enabling use in battery-powered audio routing and low-voltage data-acquisition front-ends.
For engineers reviewing the MAX4581ETE+ datasheet, MAX4581ETE+ pinout, MAX4581ETE+ application, or MAX4581ETE+ equivalent, key selection criteria include guaranteed on-resistance matching across channels, break-before-make timing (4–20ns), low charge injection (0.5–5pC), high off-isolation (–74dB at 50Ω), and TQFN-EP package thermal performance for space-constrained industrial sensor interfaces.
Technical Context
The MAX4581ETE+ implements a single 8:1 analog multiplexer architecture with three digital address inputs (A, B, C) and an active-low ENABLE terminal. Its internal CMOS switch array uses bipolar-supply-compatible gate drive circuitry to maintain rail-to-rail analog conduction while isolating logic-level translation from analog signal paths.
It features ESD-protection diodes between each analog pin and both VCC/VEE, requiring strict power-supply sequencing (VCC first, then VEE, then signals). The exposed pad (EP) must be connected to VCC for thermal and electrical integrity in the 3mm × 3mm TQFN-EP package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±2V to ±6V dual or +2V to +12V single - enables operation in automotive 5V, industrial 3.3V, and portable 2.7V systems without level shifters. |
| On-Resistance (RON) | 80Ω max at ±5V - ensures minimal signal attenuation and gain error in precision 12-bit ADC front-ends. |
| Off-Leakage Current | 1nA max at +25°C - preserves accuracy in high-impedance sensor multiplexing (e.g., thermocouples, pH electrodes). |
| Off-Isolation | –74dB at 50Ω, 1MHz - suppresses crosstalk between selected and unselected channels in multi-signal video/audio routing. |
| Charge Injection | 0.5–5pC - limits voltage glitch on sample-hold capacitors, critical for low-distortion data acquisition. |
| Logic Thresholds | 0.8V to 2.4V - ensures reliable switching with 3.3V or 5V microcontroller GPIO without external translators. |
| Break-Before-Make | 4–20ns - prevents momentary shorting during channel transitions in power-sensitive analog signal chains. |
Pinout & Package
The MAX4581ETE+ is housed in a 16-pin TQFN-EP (3mm × 3mm, 0.5mm pitch) with exposed pad connected to VCC. Pin 1 is X0; pin 2 is X1; pin 3 is X2; pin 4 is X3; pin 5 is X4; pin 6 is X5; pin 7 is X6; pin 8 is X7; pin 9 is A; pin 10 is B; pin 11 is C; pin 12 is ENABLE; pin 13 is VCC; pin 14 is VEE; pin 15 is GND; pin 16 is X. The EP pad is electrically and thermally tied to VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| X0–X7 | Analog input channels 0–7 | Bidirectional, interchangeable signal terminals - support source/sink configurations without polarity constraints. |
| X | Common analog output | Single-pole, 8-throw output node - connects to ADC input, amplifier feedback path, or DAC output buffer. |
| A, B, C | Digital address inputs | Binary-encoded channel select (CBA = 000 → X0, 111 → X7); TTL/CMOS compatible at VCC = 5V. |
| ENABLE | Active-low enable control | Pulls all switches open when high; allows global channel disable for power gating or fault isolation. |
| VCC / VEE | Positive/negative analog supply rails | Define analog signal swing limits and bias internal switch transistors - VEE = GND for single-supply operation. |
| GND | Digital ground reference | Reference for logic inputs only; no analog signal ground connection - eliminates ground-loop errors in mixed-signal systems. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports full VEE-to-VCC input range without clipping - essential for ±5V op-amp interfaces and unipolar 0–10V industrial sensors. |
| Guaranteed RON matching | ΔRON ≤ 10Ω across channels - minimizes gain mismatch in multi-channel calibration routines and programmable-gain amplifiers. |
| Low distortion | <0.02% THD at 600Ω load - preserves fidelity in audio line-level switching and medical bio-signal conditioning. |
| High-frequency off-isolation | –74dB @ 1MHz (50Ω) - maintains signal integrity in RF-adjacent analog sections and high-speed data acquisition sampling clocks. |
| TQFN-EP thermal performance | 14.7mW/°C derating above +70°C - sustains reliability in sealed enclosures and automotive under-hood environments up to +85°C. |
Applications
| Battery-Powered Sensor Hub | Industrial Data Acquisition Front-End |
|---|---|
Use Scenario: Multiplexing 8 thermistor, RTD, and voltage outputs in a handheld environmental monitor powered by two AA cells. IC Role / Device Role / Timing Role: 8:1 analog multiplexer routing sensor signals to a shared 16-bit SAR ADC input. Use Value: 1nA off-leakage prevents measurement drift; 80Ω RON ensures <0.1% gain error at 10kΩ sensor impedance; single +3.3V operation extends battery life. | Use Scenario: Selecting among 8 isolated analog inputs (4–20mA, ±10V, mV) in a PLC analog input module. IC Role / Device Role / Timing Role: High-voltage-tolerant analog switch enabling configurable input scaling before instrumentation amplifier stage. Use Value: ±6V dual-supply capability accommodates industrial signal ranges; –74dB off-isolation prevents cross-channel interference in noisy factory environments. |
| Audio Signal Router | Automotive Infotainment Interface |
Use Scenario: Switching between microphone, line-in, and Bluetooth codec outputs in a smart speaker baseband processor. IC Role / Device Role / Timing Role: Low-distortion analog multiplexer managing bidirectional audio paths with minimal THD degradation. Use Value: <0.02% THD at 600Ω preserves audio quality; 0.5pC charge injection avoids pop/click artifacts during real-time source switching. | Use Scenario: Routing camera, rear-seat entertainment, and head-unit audio signals in a vehicle infotainment head unit. IC Role / Device Role / Timing Role: AEC-Q100-compliant analog switch supporting –40°C to +125°C operation in junction-box-mounted modules. Use Value: Guaranteed performance over full automotive temperature range; TQFN-EP package meets vibration and thermal cycling requirements per ISO 16750. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1408BRUZ | 8-channel, ±15V max supply, 4.7Ω RON at ±15V, but 120Ω at ±5V; requires separate logic supply (VL). | Higher precision in high-voltage systems; unsuitable for single +3.3V operation due to VL dependency and higher RON at low VDD. | Select ADG1408BRUZ only when ±15V signal routing and sub-5Ω RON are required; MAX4581ETE+ is superior for low-voltage, single-supply portability. |
| TS5A23157DGSR | 2-channel SPDT, 0.9Ω RON at +3.3V, but only dual-channel; no address decoding or ENABLE; smaller 10-pin VSSOP package. | Limited to 2:1 switching; lacks integrated logic control - requires external decoder for 8-channel expansion. | Choose TS5A23157DGSR for ultra-low RON in compact dual-path designs; MAX4581ETE+ provides integrated 8:1 functionality with minimal PCB footprint and no external logic. |
Compared with ADG1408BRUZ and TS5A23157DGSR, the MAX4581ETE+ uniquely combines 8:1 integration, guaranteed low leakage at +25°C and +85°C, single/dual supply flexibility, and TQFN thermal performance - making it optimal for space- and power-constrained industrial and automotive multiplexing where channel count and reliability outweigh ultra-low RON.
Availability
MAX4581ETE+ is available at Aetrix Electronics and suitable for battery-operated equipment, industrial data-acquisition systems, and automotive infotainment interfaces requiring stable component supply across extended temperature ranges.
Supply support for MAX4581ETE+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power-management ICs for industrial, automotive, and communications applications.
The MAX4581 series belongs to Maxim's low-voltage analog switch/multiplexer product line, engineered for rail-to-rail signal integrity, low leakage, and robust operation in portable and harsh-environment systems.
FAQ
What is the maximum analog signal range supported by the MAX4581ETE+?
The MAX4581ETE+ supports rail-to-rail analog signals from VEE to VCC. With ±5V dual supplies, this is –5V to +5V; with +5V single supply (VEE = GND), it is 0V to +5V. Absolute maximum ratings allow VCC up to +13V and VEE down to –0.3V, but sustained operation beyond ±6V or +12V violates specifications. The MAX4581ETE+ datasheet confirms this range applies directly to the MAX4581ETE+ device under all rated conditions.
Does the MAX4581ETE+ require external pull-up or pull-down resistors on its digital inputs?
No, the MAX4581ETE+ does not require external pull-up or pull-down resistors on A, B, C, or ENABLE inputs. Its logic thresholds (0.8V low, 2.4V high at VCC = 5V) are TTL/CMOS-compatible, and internal input structures provide sufficient noise immunity. The MAX4581ETE+ datasheet specifies that VAH/VBH/VCH and VENABLEH are guaranteed at 2.4V min, eliminating need for external biasing in standard 3.3V/5V microcontroller interfacing.
Can the MAX4581ETE+ be used with a single +3.3V supply?
Yes, the MAX4581ETE+ operates with a single +3.3V supply (VCC = +3.3V, VEE = GND). At +25°C, typical on-resistance is 190Ω, off-leakage remains ≤1nA, and logic thresholds adjust to ~0.5V–2.0V. The MAX4581ETE+ Electrical Characteristics table explicitly lists "Single +3V Supply" parameters, confirming full functionality and guaranteed specs at 3.3V within the –40°C to +85°C operating range.
What is the function of the exposed pad (EP) on the MAX4581ETE+ TQFN package?
The exposed pad (EP) on the MAX4581ETE+ TQFN package must be soldered and electrically connected to VCC. It serves dual purposes: improving thermal dissipation (derating factor 14.7mW/°C) and reducing ground bounce by providing low-inductance VCC return path. The MAX4581ETE+ Pin Configurations section states "CONNECT EXPOSED PAD TO VCC", and thermal characterization data assumes this connection for all published ratings.
How does the MAX4581ETE+ handle power-supply sequencing?
The MAX4581ETE+ requires strict power-supply sequencing: VCC must be applied before VEE, followed by logic inputs and analog signals. This prevents ESD diode forward conduction and latch-up. If sequencing cannot be guaranteed, external blocking diodes (D1, D2) are recommended per Figure 1 in the MAX4581ETE+ datasheet. Failure to follow this sequence risks permanent damage, as confirmed in the Absolute Maximum Ratings and Applications Information sections.
MAX4581ETE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Strip
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 80Ohm
- Channel-to-Channel Matching (ΔRon):
- 1Ohm
- Voltage - Supply, Single (V+):
- 2V ~ 12V
- Voltage - Supply, Dual (V±):
- ±2V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 200ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 0.5pC
- Channel Capacitance (CS(off), CD(off)):
- 4pF, 18pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -78dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
MAX4581ETE+ FAQ
1.How can I place an order for MAX4581ETE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4581ETE+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4581ETE+ reliable?
The price and inventory of MAX4581ETE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4581ETE+ is usually 5 days.
3.What payment methods are accepted for MAX4581ETE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4581ETE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4581ETE+?
MAX4581ETE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4581ETE+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4581ETE+?
For technical support, including MAX4581ETE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4581ETE+ requirements.
6.How does Aetrix verify that MAX4581ETE+ is sourced from the original manufacturer or authorized distributors?
All MAX4581ETE+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4581ETE+ meets industry standards.
7.What is the process for return or replacement of MAX4581ETE+?
All MAX4581ETE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4581ETE+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4581ETE+ part is unused and in its original packaging.
Return procedure for MAX4581ETE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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